Two isosceles triangles are shown in the figure above. B=2/3a , what is the value of c
Answer:
c = 105°
Step-by-step explanation:
a = 1/2 x (180 - 90) = 45
b = 2/3 a = 2/3 x 45 = 30
c = 180 - 1/2 x (180 - 30) = 180 - 75 = 105